(a) Authorizations (permits) to solicit on Army installations will be in writing and will be valid for periods of 1 year or less.

(b) Particular caution must be taken when granting solicitation permission. The impression that permission is official indorsement or that the Department of the Army favors, sponsors, or recommends the companies, agents, or the policies offered for sale must not be conveyed. As continuing policy, the Department of the Army does not indorse any seller or product.